<!--
 * @Author: your name
 * @Date: 2021-01-07 12:46:27
 * @LastEditTime: 2021-01-11 22:21:07
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: /vue_shop/src/components/goods/Cate.vue
-->
<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog">添加分类</el-button>
        </el-col>
      </el-row>
      <!-- 表格 -->
      <el-table class="treeTable" :data="cateList" row-key="cat_id" border
        :tree-props="{children: 'children', hasChildren: 'hasChildren'}">
        <el-table-column type="index" label="#" width="50"></el-table-column>
        <el-table-column prop="cat_name" label="分类名称" width="180"></el-table-column>
        <el-table-column label="是否有效" width="180">
           <template slot-scope="scope">
            <i class="el-icon-success" v-if="scope.row.cat_deleted === false" style="color: lightgreen;"></i>
            <i class="el-icon-error" v-else style="color: red;"></i>
          </template>
        </el-table-column>
        <el-table-column label="排序">
          <template slot-scope="scope">
            <el-tag size="mini" v-if="scope.row.cat_level===0">一级</el-tag>
            <el-tag type="success" size="mini" v-else-if="scope.row.cat_level===1">二级</el-tag>
            <el-tag type="warning" size="mini" v-else>三级</el-tag>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template>
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- <tree-table :data="cateList" :columns="columns" :selection-type="false" :expend-type="false" show-index index-text="#" border :show-row-hover="false"> -->
        <!-- 是否有效 -->
        <!-- <template slot="isok" slot-scope="scope">
          <i class="el-icon-success" v-if="scope.row.cat_deleted === false" style="color: lightgreen;"></i>
          <i class="el-icon-error" v-else style="color: red;"></i>
        </template> -->
        <!-- 排序 -->
        <!-- <template slot="order" slot-scope="scope">
          <el-tag size="mini" v-if="scope.row.cat_level === 0">一级</el-tag>
          <el-tag size="mini" type="success" v-else-if="scope.row.cat_level === 1">二级</el-tag>
          <el-tag size="mini" type="warning" v-else>三级</el-tag>
        </template> -->
        <!-- 操作 -->
        <!-- <template slot="opt" >
          <el-button type="primary" size="mini"></el-button>
          <el-button type="danger" size="mini"></el-button>
        </template>
      </tree-table> -->
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="querInfo.pagenum"
        :page-sizes="[3, 5, 10, 15]"
        :page-size="querInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加分类对话框 -->
    <el-dialog
      title="添加分类" :visible.sync="addCateDialogVisible" width="50%" @close="addCateDialogClosed">
      <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px">
        <el-form-item label="分类名称：" prop="cat_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类：">
          <el-cascader
            v-model="selectedKeys"
            :options="parentCateList"
            :props="{ expandTrigger: 'hover', value:'cat_id', label: 'cat_name', children:'children'}"
            @change="parentCateChange" clearable change-on-select>
          </el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      querInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5
      },
      cateList: [],
      total: 0,
      // 为table指定列的定义
      tableData: [
        {
          id: 1,
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        },
        {
          id: 2,
          date: '2016-05-04',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1517 弄'
        },
        {
          id: 3,
          date: '2016-05-01',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1519 弄',
          children: [
            {
              id: 31,
              date: '2016-05-01',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1519 弄'
            },
            {
              id: 32,
              date: '2016-05-01',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1519 弄'
            }
          ]
        }
      ],
      addCateDialogVisible: false,
      // 添加分类表单的数据对象
      addCateForm: {
        cat_name: '',
        // 父级分类ID
        cat_pid: 0,
        // 分类的等级，默认1级
        cat_level: 0
      },
      // 添加分类表单验证的规则对象
      addCateFormRules: {
        cat_name: [
          { require: true, message: '请出入分类名称', trigger: 'blur' }
        ]
      },
      parentCateList: [],
      selectedKeys: []
      // colunms: [
      //   {
      //     lable: '分类名称',
      //     prop: 'cat_name'
      //   },
      //   {
      //     label: '是否有效',
      //     type: 'template',
      //     template: 'isok'
      //   },
      //   {
      //     label: '排序',
      //     type: 'template',
      //     template: 'order'
      //   },
      //   {
      //     label: '操作',
      //     type: 'template',
      //     template: 'opt'
      //   }
      // ]
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories', { params: this.querInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取数据失败')
      }
      // 获取的数据列表赋值给catelist
      this.cateList = res.data.result
      // console.log(res.data)
      // 总数据条数赋值
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.querInfo.pagesize = newSize
      this.getCateList()
    },
    handleCurrentChange(newPage) {
      this.querInfo.pagenum = newPage
      this.getCateList()
    },
    // 展示添加分类对话框
    showAddCateDialog() {
      this.getParentCateList()
      this.addCateDialogVisible = true
    },
    // 获取父级分类列表
    async getParentCateList() {
      const { data: res } = await this.$http.get('categories', { params: { type: 2 } })
      if (res.meta.status !== 200) {
        return this.$message.error('获取父级分类失败')
      }
      this.parentCateList = res.data
    },
    // 选择项发生变化触发此函数
    parentCateChange() {
      console.log(this.selectedKeys)
      // 如果selectedkeyslength大于零，则选中
      if (this.selectedKeys.length > 0) {
        // 父级分类ID
        this.addCateForm.cat_pid = this.selectedKeys[this.selectedKeys.length - 1]
        this.addCateForm.cat_level = this.selectedKeys.length
        return false
      } else {
        this.addCateForm.cat_pid = 0
        this.addCateForm.cat_level = 0
      }
    },
    addCate() {
      this.$refs.addCateFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          'categories', this.addCateForm
        )
        if (res.meta.status !== 201) {
          return this.$message.error('添加分类失败！')
        }
        this.$message.success('添加分类成功！')
        this.getCateList()
        this.addCateDialogVisible = false
      })
    },
    // 监听对话框的关闭事件
    addCateDialogClosed() {
      this.$refs.addCateFormRef.resetFields()
      this.selectedKeys = []
      this.addCateForm.pid = 0
      this.addCateForm.cat_level = 0
    }
  }
}
</script>

<style lang="less" scoped>
.treeTable{
  margin-top: 15px;
}
.el-cascader{
  width: 100%;
}
</style>
